[pet-ee-uh l-yool, -uh-lool, pet-ee-ol-yool]

noun Botany.

a small petiole, as of a leaflet in a compound leaf.

Origin of petiolule

From the New Latin word petiolulus, dating back to 1825–35. See petiole, -ule
Related formspet·i·ol·u·lar [pet-ee-ol-yuh-ler] /ˌpɛt iˈɒl yə lər/, pet·i·ol·u·late [pet-ee-ol-yuh-leyt, -lit] /ˌpɛt iˈɒl yəˌleɪt, -lɪt/, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for petiolule



the stalk of any of the leaflets making up a compound leaf

Word Origin for petiolule

C19: from New Latin petiolūlus, diminutive of Latin petiolus; see petiole
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012